Question

我正在尝试向数据库提交表单，并希望创建一个会话。可以使用的会话是“最后插入的ID”，也可以创建唯一ID作为会话。我面临的问题是，每当我尝试刷新页面时，由于在数据库中插入了新记录，我的sessionID会不断增加。

查看：Welcome_Message.php

    <form method="POST" action="GetQuotes/quote" id="ink-form" name="ink-form">
    <ul class="inkappform inkbookform">
    <li class="textheading ink-ff-row"><h2><span class="msg_text">To get a quote, select your vehicle type</span></h2></li>
    <li class = "textfname ink-ff-row"><input type = "text" name = "bk_name" class = "inktext inklarge" placeholder = "First name" required = "" autocomplete="off" /></li>
    <li class = "textlname ink-ff-row"><input type = "text" id = "bk_lname" name = "bk_lname" class = "inktext inklarge" placeholder = "Last name" autocomplete="off" /></li>
    <li class = "textaptemail ink-ff-row"><input type = "email" name = "bk_email" class = "inktext inklarge" placeholder = "Email" required = "" autocomplete="off" /></li>
    <li class = "textaptemail ink-ff-row"><input type = "text" name = "bk_contact" class = "inktext inklarge" placeholder = "Contact number" required = "" autocomplete="off" /></li>
    <li class = "textaptphone ink-ff-row"><input type = "text" name = "pick_add" list="pu_postcode" id = "pick_add" class = "inktext inklarge" placeholder = "Type Pickup Posctcode" required = "" autocomplete="off" />
    <datalist id="pu_postcode">
    <option value=“001”>001 </option> 
    <option value=“002”>002 </option> 
    <option value=“003”>003 </option> 
    <option value=“004”>004 </option> 
    </datalist> </li>
    <li class = "textaptphone ink-ff-row"><input type = "text" name = "drop_add" list="do_postcode" id = "drop_add" class = "inktext inklarge" placeholder = "Type Dropoff Postcode" required = "" autocomplete="off" />
    <datalist id="do_postcode">
    <option value=“001”>001 </option> 
    <option value=“002”>002 </option> 
    <option value=“003”>003 </option> 
    <option value=“004”>004 </option> 
    </datalist> </li>
    <li class = "textaptphone ink-ff-row">
    <input type = "text" name = "car_list" list="car_dalalist" id = "car_list" class = "inktext inklarge" placeholder = "Type of Car" required = "" autocomplete="off" />
    <datalist id="car_dalalist">
    <option value=“BMW”>BMW </option> 
    <option value=“Merc”>Merc </option> 
    <option value=“Honda”>Honda </option> 
    <option value=“Toyota”>Toyota </option> 
    </datalist> </li>
    <li class = "textaptphone ink-ff-row">
    <input type = "text" name = "car_models" list="car_model_dalalist" id = "car_models" class = "inktext inklarge" placeholder = "Car Model" required = "" autocomplete="off" />
     <datalist id="car_model_dalalist">
    // Car Models list populates
    </datalist> </li>
    <li class = "textaptphone ink-ff-row">
    <input type = "text" name = "car_man_year" list="car_year_dalalist" id = "car_man_year" class = "inktext inklarge" placeholder = "Manufacturing Year" required = "" autocomplete="off" />
    <datalist id="car_year_dalalist">
    //Manufacturing list populates
    </datalist>  </li>
    <li class = "select_item ink-ff-row">
    <input type = "text" name = "bodytypeselect" list="car_bodytype_dalalist" id = "bodytypeselect" class = "inktext inklarge" placeholder = "Body Type" required = "" autocomplete="off" />
    <datalist id="car_bodytype_dalalist">
    <select  id="cbody"></select>
    </datalist>
    </li>
    <input type="submit" name="estimate" id="submit" class='ink-submit inkrequired' value="Estimate Quote"/>  
    </ul>
    </form>

填写数据后，表单调用 GetQuotes / quote

    public function quote()
 {
    if (!empty($_POST)) {

         $first_name = $this->input->post('bk_name');
         $last_name = $this->input->post('bk_lname');
         $email = $this->input->post('bk_email');
         $contact = $this->input->post('bk_contact');
         $p_address = $this->input->post('pick_add');
         $d_address = $this->input->post('drop_add');
         $carList = $this->input->post('car_list');
         $carModel = $this->input->post('car_models');
         $carbodytype = $this->input->post('bodytypeselect');
         $manYear = $this->input->post('car_man_year');
         $sessionID = $this->input->post('SessID');
         $btn = $this->input->post('estimate');  


         $this->session->set_flashdata('fname', $first_name);
         $this->session->set_flashdata('lname', $last_name);
         $this->session->set_flashdata('pick_pc', $p_address);
         $this->session->set_flashdata('drop_pc', $d_address);

         $this->session->set_flashdata('carMake', $carList);
         $this->session->set_flashdata('carModel', $carModel);
         $this->session->set_flashdata('carSize', $carbodytype);
         $this->session->set_flashdata('ManYear', $manYear);
         if ($first_name && $last_name && $p_address && $d_address && $carList) {
                // Loading model


                 $data = array('First_Name'=> $first_name, 'Last_Name' => $last_name, 'Email' => $email, 'Phone' => $contact, 'Origin' => $p_address, 'Destination' => $d_address, 'CarMake' => $carList, 
                 'CarModel' => $carModel, 'ManYear' => $manYear, 'CarType' => $carbodytype, 'SessionID' => $sessionID  );

                $sID = $this->PostModel->insertToQuoteForm($data);
                }
        }



          $data = $this->getNewQuoteNumber();
          $this->load->view('insertNewQuote', $data);


  }


   function getNewQuoteNumber () {
         $data = array();
         $this->session->keep_flashdata('QuoteNo');
         $qNo = $this->session->flashdata('QuoteNo');

         $first_name = $this->session->flashdata('fname');
         $last_name = $this->session->flashdata('lname');
         $p_address = $this->session->flashdata('pick_pc');
         $d_address = $this->session->flashdata('drop_pc');

         $carList = $this->session->flashdata('carMake');
         $carModel = $this->session->flashdata('carModel');
         $carbodytype = $this->session->flashdata('carSize');
         $manYear = $this->session->flashdata('ManYear');


         echo 'qNo is:: '. $qNo ;
         echo '<br> Fname is:: '. $first_name ;
         echo '<br> CarType is:: '. $carbodytype ;


         $data['quotes_fetched'] = $this->PostModel->getQuotes();  // load the view file , we are passing $data array to view file
         $data['withgoods_quotes_fetched'] = $this->PostModel->withGoodsGetQuotes();
         $data['rowstotal'] = count($data['quotes_fetched']);
         //$this->PostModel->insertToQuoteForm();
         $this->load->view('page_header');

         $this->load->view('page_menu'); 
         $this->load->view('QueryHandler/Quote', $data);
         $this->load->view('page_footer'); 

  }

和模型：- PostModel.php

function insertToQuoteForm($data) {

                $this->db->insert('Quote_Form', $data);
                // Return the id of inserted row
                return $idOfInsertedData = $this->db->insert_id();




                 }

提交表单后，它会将数据插入数据库中，并获取数据以将估算出的报价提供给用户。如果用户刷新页面，我想停止在数据库中插入数据或使用会话进行显示。

感谢您的时间！

Answer 1

首先在模型中检查是否有新记录，然后直接插入，否则返回旧ID。与此类似：

$temp = $data;
unset($temp['SessionID']);
$this->db->where($temp);
$query = $this->db->get('Quote_Form');
if ($query->num_rows() > 0) {
    $result = $query->result();
    return $idOfInsertedData = $result->id;
}
$this->db->insert('Quote_Form', $data);
return $idOfInsertedData = $this->db->insert_id();

Answer 2

实际上，PHP中有一个预定义的函数称为“最后插入ID”。它可以在PDO和mysqli中使用。在您的php模型中：

 function insertToQuoteForm($data) {
      if($this->db->insert('Quote_Form', $data)){ //check if successful
          return $this->db->lastInsertId(); //return the ID of the last insert
      }
 }

在您的quote.php中，需要输入以下内容：

 $sID = $this->PostModel->insertToQuoteForm($data);
 $_SESSION['lastInserted'] = $sID;

如何将表单中的数据插入数据库并获取最后插入的ID /创建唯一ID作为CI中用户的Session

2 个答案: